Page 1
The Protector System is designed to increase the safety
and functionality of your garage door motor.
The system uses an invisible beam across the garage
door opening. If an obstruction breaks the light beam
while the door is closing, the door will stop and reverse
to full open position.
NOTE: The brackets must be connected and fastened so
that the sending and receiving eyes face each other.
The brackets must be securely fastened to a solid surface
such as the studs on either side of the door, or add a piece
of wood at each location if installing in masonry
construction.
The invisible light beam path must be unobstructed.
Ensure no part of the door (or door tracks, springs, hinges,
rollers or other hardware) interrupts the beam while the
door is closing. If it does, add a piece of wood to build out
each sensor mounting location to the minimum depth
required for light beam clearance.
Assembly Process:
The IR Beams are supplied preassembled, complete with
two sensors, wiring and wall brackets (fig 2 & fig 3).
Install the mounting brackets and sensors to either side of
the inside of the garage door, and at a height of no greater
than 100 mm off the garage floor.
The brackets are designed to be used for Wall or Floor
fixing with a variety of hole combinations to achieve the
desired results.
Drill the required holes and install the brackets with wall
plugs and screws provided. Ensure they do not obstruct
the door movement.
Wiring Process:
Align the Sensors to face each other and tighten if
necessary. The wiring should exit from the bottom of the
housing to maintain the correct IP rating and continued
operation.
One sensor is a Sending Eye, the other is a Receiving
Eye. Try to avoid positioning these indirect sunlight as this
may interfere with the operation of the beams.
Run both sets of wires back to the power head CONTROL
PANEL. Ensure the wires are well supported and do not
interfere or get damaged by movement of the door panels
or spring hardware.
At the Power head end, cut the wires to the correct length
and strip each wire back around 15 mm.
Twist both White wires together and install into “quick
release” terminal (white).
Twist both Black wires together and install into“quick
release” Terminal (Grey).
For Specific Connections for each product, refer to the
following pages, or to your Product Handbook.
Activation:
After the Protector System has been connected to the
powerhead, the system will be automatically activated.
To protect small children, install the Protector System
no higher than (100 mm) above the floor.
For Commercial door an additional beam is required
at 650 mm.
Disconnect power to the door opener before installing
the Protector System.
™
™
The Protector System
Safety Reversing Sensor
Model 774ANZ
Model 774AML
™
Review all safety warnings outlined in your Garage
door operator owner’s manual. Ensure that the door
and all its fixtures and fittings are in good condition.
Red LED
MUST BE ON
Re d LE D
MUS T BE ON
Sa fety R ever sing S ens or
6" (15 cm) max. above floor
For Commercial doors
Safety Reversing Sensor
650 mm and 100 mm
For Residential Doors
Safety Reversing Sensor
650 mm
100 mm
0 mm (Floor)
For Commercial doors ensure the door works well in manual operation.
Commercial Door / Residential Door
M6 FLANGE
NUT
774 IR
BEAM
2 CORE WIRE
CABLE
WALL
BRACKET
PLASTIC WALL
PLUG
WALL
SCREW
M6 COACH
SCREW
Figure 2
Figure 3
Figure 1
View 1
View 2
Page 2
60s
120s
180s
O
–
grey
white
2
white
MT60 / MT60P / ML700 / ML750
MT600 / MT1000
MT5580/P
grey
white
white wires
twisted together
3
grey
white wires
black wires
black wires
twisted
together
white wires
twisted together
MR800 / MR60 / HE60R / CR550 / MLR500
MLR750 / CR600
grey
white
white wires
twisted together
2
1
3
Wiring Connections Merlin Professional
MT60/P connections (Chamberlain DIY - ML700 & ML750)
Open the lens cover on the front of the unit to access the
connection terminals. Strip all wires back about 15 mm
then twist the two white wires and the two black wires
together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal, then
terminate the white wires into the white terminal.
MT5580/P connection
Locate the connection terminals on the back of the unit.
Strip all wires back about 15mm then twist the two white
wires and the two black wires together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal, then
terminate the white wires into the white terminal.
MT600 / MT1000 connections
Locate the terminals on the back of the unit. Strip all wires
back about 15mm then twist the two white wires and the
two black wires together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal (3),
then terminate the white wires into the white terminal (2).
NOTE: Optional connections: Connect the white wires
and black wires into separate terminal on the back of the
unit as illustrated above. This may be required if larger
diameter cable extensions have been used to extend
wiring.
MR60 / MR800 connections (Chamberlain DIY HE60R /
CR550 / MLR750 / MLR500 / HandyLift - CR550 /
HandyLift Plus - CR600)
Gently lift the diffuser on the base of the motor to access
the terminals. Strip all wires back about 15mm then twist
t
he two white wires and the two black wires
together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal, then
terminate the white wires into the white terminal.
black wires
twisted
together
black wires
twisted
together
Page 3
MJ3800/R
White Grey
w hit e w ires
t w ist ed to g et her
Quick-Connect Terminals
3. To insert or release
wire, push in tab with
screwdriver tip
1. Strip wire
(15 mm)
2. Twist like colored
wires together
Grey
Red
White
7/16" (10mm)
MJ3800/R connections
Gently lift the cover flap at the base of the motor
to access the terminals. Strip all wires back about
15mm then twist the two white wires and the two
black wires together.
Use a small screw driver or pen to hold down the
spring terminals, insert the black wires into the grey
terminal, then terminate the white wires into the
white terminal.
Wiring Connections Merlin Professional
CyclonePro MT120EVO / Tiltmaster MT120EVO /
PowerAce MT60EVO connections (Chamberlain DIY
PowerLift CS60EVO / PowerLift Plus CS100EVO)
Locate the terminals on the back of the unit. Strip
all wires back about 15 mm then twist the two white
wires and the two black wires together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal (3),
then terminate the white wires into the white terminal (2).
30 V DC
+ -
0 1 2 2 3 4 5 6 7
UP
DOWN
PROG
LEARN
(YELLOW)
INDICATOR
LED
White x 2
MT120EVO/ MT100EVO/ MT60EVO
CS60EVO/ CS100EVO
OverDrive MRC950EVO / SilentDrive MR850EVO /
QuietDrive MR650EVO (Chamberlain DIY HandyLift
Deluxe CR650EVO)
Gently lift the cover on the base of the motor to
access the terminals. Strip all wires back about
15mm then twist the two white wires and the two
black wires together.
Use a small screwdriver or pen to hold down the spring
terminals, insert the black wires into the grey terminal,
then terminate the white wires into the white terminal.
12V DC
OverDrive MRC950EVO &
SilentDrive MR850EVO ONLY
Black x 2
1. Strip wire
(15 mm)
2. Twist like colored
wires together
7/16" (10mm)
MRC950EVO / MR850EVO / MR650EVO / CR650EVO
black wires
twisted
together
Note: This model may need to be manually initialised.
Please refer to your product handbook.
Page 4
• Press the remote control push button to open the door.
• Place an object large enough to obstruct the sensor
beam in the path of the door.
• Press the remote control push button to close the door.
The door will not move more than 40mm.
The door opener will not close from a remote control
if the indicator light in either sensor is blinking (alerting you to the fact that the sensor is misaligned or
obstructed).
Note: After the beams are initialised they are fail safe i.e. if
they are removed, the motor will not close until the beams
are re-installed.
TEST THE PROTECTOR SYSTEM™
TROUBLE SHOOTING
1. If the
sending eyeorreceiving eye
indicator light
does not glow after installation, check for:
• Electric power to the opener.
• A short in the black/white wires. These can occur
under staples or at screw terminal connections.
• Incorrect wiring between sensors and opener.
• An open wire, (wire break).
• Lock switch on Multi-Function Door Control Panel is
activated. Deactivate.
2. If both sensors are blinking, realign or remove
obstruction.
3. Once an infrared sensor has been installed the motor
will only operate whilst it is installed correctly.
4. If the IR sensors are damaged and cannot be
repaired:
Reset the Beam Input
To reset the beam input:
* Remove all PE beam wires from the motor.
* Turn power off for 2 seconds
* Turn power on for 2 seconds
* Turn power off for 2 seconds
T
should open and close using the remote control.
urn the power back on and test your motor, it
Chamberlain Australia Pty Ltd
PO Box 1446
Lane Cove NSW 1595
Chamberlain New Zealand Ltd
P.O. Box 100221
North Shore 0745
gomerlin.co.nz
114D4785B
Wiring Connections Merlin Professional
S P
1 2 3
123 2
-
+
P
S
1
3
2
3
2
2
1
EntryLift MT50EVO & ST50EVO connection
Open the lens cover on the front of the unit to access the
connection terminals. Strip all wires back about 15 mm then
twist the two white wires and the two black wires together.
Use a small screwdriver or pen to hold down the spring terminals,
insert the black wires into the grey terminal (3) , then terminate the
white wires into the white terminal (2).
WhisperDrive MT3850EVO connection
Locate the connection terminals on the side of the unit
Strip all wires back about 15mm then twist the two white
wires and the two black wires together.
Use a small screwdriver or pen to hold down the spring terminals,
insert the black wires into the grey terminal, then terminate the
white wires into the white terminal.
Note: This model may need to be manually initialised. Please
refer to your product handbook.
gomerlin.com.au
white
grey
To release wires
press tab with a
screwdriver or
pen
6mm
Figure 5
MT50EVO / ST50EVO
MT3850EVO
Note: This model may need to be manually initialised. Please
refer to your product handbook.
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